Cost: Free. Just like the first Camp, there is no cost to register. Also free is the food at breakfast and lunch, as well as the entertainment.

Who: As you can see on the initial Who's Coming list it's a diverse group including mashup developers (independent and enterprise), analysts, VCs, tool providers, and the people actually building the APIs at places like Google, Yahoo, and Microsoft.

How and What: Follows an unconference format that allows the attendees to define the agenda and lead the discussions which results in a high signal-to-noise ratio.

Panels and keynote: In addition to the unconference, there will be a keynote address from Tim O'Reilly along with a series of moderated panels (and panelists include three of our PW team: myself, Andres Ferrate, and Raymond Yee).